Question about Toshiba TP55F80/81 55" Rear Projection Television

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I have a Toshiba TV with a model TP55F80. There was no picture or sound, just a blinking power light. Tried plugging and unplugging, moving to a different outlet, still would not work

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The led is blinking to announce that the power source has been shut down in protected mode because there's a short on one of its outputs. This isn't a setting or outlet problem, an actual part inside the tv has failed.To find which part the tv must be opened and tested by someone with at least a basic electronics experience - most likely on a tv of that age the electrolytic capacitors have aged and are starting to fail and you must know how to spot and replace them. If you haven't done this before then it's time to call a pro.

Posted on Aug 07, 2010

  • 3 more comments 
  • rodel_banal Aug 07, 2010

    how much does a capacitor cost?

  • rodel_banal Aug 07, 2010

    my dad told me, he initially noticed changes in the color and shadows, then after 2-3 days, it shuts off and would not turn on.

  • Azrael SRL Aug 07, 2010

    The changes in the image were caused by lower than normal voltage at the convergence circuit because the capacitors have started to fail.



    Best case scenario, just some failed capacitors to replace - less than $25 in parts. If you have the necessary skills the labor will be free; if not add another $100.
    Worst case, you have used the tv till if failed completely and now both the convergence and power board have failed totally and must be replaced - around $300 for the boards and $75 for replacing them.
    This is a good quality tv, it's worth repairing it, but get a quote before to be sure.

  • rodel_banal Aug 07, 2010

    i OPENED THE back of the TV to look for the capacitors. where are they located? I would like to try first before calling a technician

  • Azrael SRL Aug 07, 2010

    This is an electrolytic capacitor  http://en.wikipedia.org/wiki/Electrolyti...  . They are all over your tv but the ones that fail are the big ones.



    Why they fail and how they look when they fail is exposed very well here
    http://www.mikerepairscomputers.com/blog...
    Look for bulging and leaking ones, replace them and try to start the tv again. If this doesn't work this means that when the capacitors failed they fried other components like the main power transistor and the rectifying diodes. Those should be replaced only by a pro.

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Hello,

If you are having sounds but no picture, it is either the lamp or the t-com board.

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Have the unit checked for bad capacitors and replace them and the television will be in good condition once again.

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